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六年级数学下册口算练习题.docx

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(1) 97 + 258= 369-204= 101×25 = 50×12 = 360÷3 = 300÷50 = (2) 362 + 298= 363-199= 32×101 = 25×40 = 450÷90 = 90÷5 = (3) 204 + 365= 457-302= 125×8 = 12×70 = 480÷12 = 500÷50 = (4) 450 + 250= 360-240= 50×24= 310×6 = 60÷15 = 960÷30 = (5) 4.1+ 0.9= 2.3-1.8= 0.2×9 = 0.3×0.7 = 0.6÷3 = 0.15÷0.5 = (6) 3 + 1.2= 7.3- 5 = 0.2×0.4 = 1.2×0.5 = 2.4÷0.6 = 24÷0.3 = (7) 7.12+ 0.5 = 6 -1.8= 1.5×0.4 = 25×0.4 = 4.2÷0.07 = 4÷0.08 = (8) 2 + 5.9= 4.31-2.2= 0.6×20 = 1.6×30 = 0.56÷7 = 0.42÷0.6 = (9) 2.4 + 4 = 18.6-6 = 40×1.2 = 50×1.3 = 0.48÷0.8 = 3÷0.6 = (10) 0.21 + 5 = 6 -2.6 = 0.4×1.4 = 1.5×0.8 = 0.3÷0.5 = 0.1÷0.2 = (11) + = + = + = - = - = - = (12) + = + = + 2 = -= -= 1-= (13) ×3 = ×8 = ×3 = 8 × = 3 × = 10 × = (14) ×= ×= ×= ×= ×= ×= (15) ÷4 = ÷8 = ÷10 = ÷6= ÷14= ÷22= (16) ÷= ÷= ÷= ÷= ÷= ÷= (17) 88×32≈ 39×302≈ 19×201≈ 67×93≈ 195×41≈ 392×12≈ (18) 18×41≈ 22×198≈ 310×41≈ 42×192≈ 95×192≈ 39×112≈ (19) 352÷7≈ 462÷9≈ 425÷60≈ 334÷80≈ 360÷49≈ 238÷31≈ (20) 152÷3≈ 472÷8≈ 415÷40≈ 364÷50≈ 360÷89≈ 268÷71≈ (21) + = + = + = -= - = -= (22) + = 2 + = + = -= - = 2 -= (23) ×8= 21×= ×15= 6×= ×7= 36×= (24) × = × = × = × = × = × = (25) ÷2 = ÷4 = ÷7 = ÷12 = ÷9 = ÷2 = (26) ÷3 = ÷3 = ÷15 = ÷4= ÷2= ÷4= (27) ÷= ÷= ÷= ÷= ÷= ÷= (28) ÷= ÷= ÷= ÷= ÷= ÷= (29) 14÷= ÷8= 5÷= ÷= ÷= 4÷= (30) 9÷= ÷= ÷= ÷= ÷= ÷30= (31) ÷18 = ÷4= 4÷= ÷6= 5÷= ÷5= (32) ÷= ÷= ÷= 3÷ = ÷10= ÷= (33) ÷= ÷= ÷= ÷= ÷= ÷= (34) ÷= ÷= ÷= 9÷= ÷5 = ÷= (35) 20÷= ÷6= 15÷= ÷= 8÷= 10÷= (36) ÷= ÷= ÷= ÷5= ÷= ÷= (37) 297 + 248= 569-203= 101×36 = 30×32 = 450÷3 = 720÷60 = (38) 303 + 299= 467-105= 59×101 = 125×80 = 750÷50 = 95÷19= (39) 604 + 165= 857-502= 250×4 = 13×60 = 600÷12 = 390÷39 = (40) 459 + 290= 360-204= 40×24= 130×6 = 750÷25 = 960÷80 = (41) 4.1+ 5.9= 5.3-1.8= 0.5×9 = 0.9×0.7 = 1.2÷6 = 0.15÷15 = (42) 7 + 1.2= 5.3- 5 = 0.1×0.8 = 1.8×0.3 = 24÷0.1 = 3.4÷1.7 = (43) 7.1+ 0.5 = 4 -1.8= 1.4×0.4 = 24×0.5 = 0.42÷0.7 = 6÷0.2 = (44) 5 + 5.9= 5.31-4.2= 0.6×90 = 1.5×30 = 0.35÷7 = 0.4÷0.5 = (45) 2.5 + 4 = 16.6-6 = 60×1.2 = 40×1.3 = 4.8÷4.8 = 30÷0.5 = (46) 0.25 + 0.5 = 8 -2.6 = 0.5×1.4 = 1.2×0.8 = 0.3÷5 = 0.1÷0.5 = (47) 5 + 1.2= 7.3- 4 = 0.5×0.3 = 3÷0.6 = + = -= (48) 3.6+ 0.9= 7.2-1.8= 0.6×9 = 2.4÷3 = + = - = (49) 81×32≈ 39×397≈ 20×201≈ 78×91≈ 190×21≈ 292×32≈ (50) 48×61≈ 21×298≈ 390×31≈ 49×92≈ 97×39≈ 42×192≈ (51) 352÷5≈ 412÷8≈ 235÷30≈ 344÷70≈ 360÷59≈ 238÷41≈ (52) 182÷9≈ 482÷6≈ 105÷20≈ 390÷80≈ 460÷89≈ 268÷51≈ (53) 0.03 + 5 = 4-2.6 = 0.3×1.4 = 0.4÷0.5 = + = -= (54) 4 + 5.9= 6.54-2.2= 0.7×20 = 0.42÷7 = + = - = (55) 3.6+ 0.9= 7.2-1.8= 0.6×9 = 2.4÷3 = + = - = (56) 5 + 1.2= 7.3- 4 = 0.5×0.3 = 3÷0.6 = + = -= (57) 2.12+ 0.5 = 5 -1.8= 1.4×0.5 = 3.5÷0.07 = + = -= (58) 5.3 + 4 = 16.2-6 = 30×1.2 = 0.4÷0.8 = + 3 = 1-= (59) ×10 = ×6 = 10× = ×3 = 22× = ×5 = (60) 1 ×= 7× = ×12 = ×10 = 6 × = × 10 = (61) ×= ×= ×= ×= ×= ×= (62) ×= ×= ×= ×= ×= ×= (63) ÷8 = ÷4= ÷6= ÷10= ÷7= ÷11= (64) ÷2 = ÷3 = ÷8= ÷10 = ÷5 = ÷6 = (65) 21÷= ÷= ÷= 8÷= ÷5= 8÷= (66) ÷15= 3÷= ÷= ÷= ÷= ÷= (67) ÷4= 6÷= 5÷= 4 ÷= ÷5= 18÷= (68) ÷= ÷= ÷= 3÷ = ÷= 10÷= (69) ÷= ÷= ÷= ÷= ÷= ÷= (70) ÷= ÷5= ÷= ÷= 9÷= ÷= (71) 6÷= ÷= 4÷= ÷8= ÷15= ÷10= (72) ÷= ÷= ÷= ÷= ÷= ÷=
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